Description: Feb 04, 2010 - Washington, District of Columbia, USA - A custom-decaled FedEx 777 Freighter dubbed the 'FedEx Panda Express' will deliver two giant pandas back home to China from the United States. The U.S. cities of Atlanta and Washington have said their farewells to two popular, beloved giant pandas that were huge tourist attractions, but had to be sent to China under an agreement with Beijing. Zoo Atlanta sent three-year-old Mei Lan early Thursday. She flew to Washington Dulles International Airport to join 4.5-year-old Tai Shan of the National Zoo for the approximately 14-hour flight to Chengdu, China. The parents of the two pandas are on loan from China, and an agreement between the zoos and Beijing says any cub born to the pandas must be sent to China. (Credit Image: Transport-Photo Images via FEDEX/ZUMA Press/Global Look Press.com)